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Cross-checking processors for powertrain control systems using a dedicated serial data link

  • US 7,269,491 B2
  • Filed: 05/16/2002
  • Issued: 09/11/2007
  • Est. Priority Date: 05/16/2002
  • Status: Expired due to Fees
First Claim
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1. An engine management system for a vehicle, comprising;

  • a vehicle data bus;

    an engine control module connected to said vehicle data bus;

    a transmission control module connected to said vehicle data bus; and

    a second dedicated data bus connecting said transmission control module to said engine control module, where said engine control module and said transmission control module perform processor validity and integrity checks over said dedicated data bus and said second dedicated data bus is not connected to said vehicle data bus.

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